In 2074, when the mob wants to get rid of someone, the target is sent into the past, where a hired gun awaits - someone like Joe - who one day learns the mob wants to 'close the loop' by sending back Joe's future self for assassination.

Two people live in different times. Seo-Yeon lives in the present and Young-Sook lives in the past. One phone call connects the two, and their lives are changed irrevocably.

College student Ryan wakes up in his car on Tuesday, September 19. Returning to his dorm room, he walks in on his roommate Carter and Carter's girlfriend Tree. He resumes work on an experimental quantum reactor with fellow students Samar and Dre. After Bronson, the school dean, shuts down the project for triggering several power outages, Ryan is murdered by someone dressed as Babyface, and wakes up again on Tuesday the 19th. Tree explains her experience Happy Death Day#Plot, and she and Carter agree to help Ryan. They learn the reactor was responsible for creating the loop. The new Babyface tracks Ryan down, but Tree subdues and unmasks him to reveal another Ryan. The second Ryan warns that the original must die for the loop to close. Terrified, Ryan activates the reactor, releasing a powerful energy pulse that knocks everyone unconscious.

Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.

Mark, the son of gangster Antony, finds a telephone that has the ability to contact the past.

Trapped in a time loop that constantly repeats the day of his murder, a former special forces agent must unlock the mystery behind his untimely demise.

An Arizona logger mysteriously disappears for five days in an alleged encounter with a flying saucer in 1975. His co-workers endure ridicule and contempt as they are wrongly accused of murder.

Robbed of his birthright, Arthur comes up the hard way in the back alleys of the city. But once he pulls the sword from the stone, he is forced to acknowledge his true legacy - whether he likes it or not.

A young woman grieving the loss of her mother, a famous scream queen from the 1980s, finds herself pulled into the world of her mom's most famous movie. Reunited, the women must fight off the film's maniacal killer.